RE: Xylol.or Xylene..Benzene derivatives

From:

RSRICHMOND@aol.com

Xylene ("xylol" is archaic) is a mixture of isomers - ortho, meta, and para
xylenes, with some ethylbenzene. If you don't understand this statement, look
up:
Conventional structural formulas:
http://www.mgc.co.jp/eng/aromatic/xylen/index.shtml
Atomic models:
http://www.mgc.co.jp/eng/aromatic/index.shtml
That's why containers are usually labeled "xylenes" - there are three or four
closely related chemical compounds that bear this name.
Clearly people have had problems with contaminents in cheap xylenes. Does
anyone know what the chemical specifications are for xylene for histologic
purposes? I imagine Dick Dapson knows, but "xylene" is a four-plus-two letter
word around Anatech, for reasons we all know (or jolly well should know).
Bob Richmond
Samurai Pathologist
Knoxville TN